Flex Seal Flex Paste Super Thick Rubber Paste, Moldable Leak Protector Sealant, White, 3-lb/1.36 kg

The Flex Seal Flex Paste Super Thick Rubber Paste gives you the ultimate control over sealing virtually anything. The thick rubberized paste lets you spread and shape it however you like, forming a strong flexible rubber coating that seals out air and moisture. It clings to surfaces instantly filling large gaps, cracks, and holes. The paste won't shrink, wash away, or dry out, and can later be painted any colour. You can apply Flex Paste wet or dry, even underwater, on a wide range of surfaces like wood, glass, metal, concrete, brick, and more.